TY  - BOOK
AU  - Heath, W.
TI  - Inexpensive aerial photography for highway engineering and traffic studies
AV  - TE7 T72 no. 632 
PY  - 1980///
CY  - Crowthorne, Berkshire
PB  - Transport and Road Research Laboratory
KW  - Aerial photography in traffic engineering
KW  - Aerial photography in road surveying
ER  -